山东省旱,涝,地震灾害的时序特征及其相互关系

分析了山东地区历史干旱、洪涝和地震灾害时间分布特征及其相互关系，发现旱涝与地震灾害一样具有不同时间尺度的准周期活动特征，且地震与旱涝具有一定相关关系．如内陆大地震多与干旱活动相继发生，海域地震多发生在洪涝活动时期；破坏性地震前多发生干旱，震后又常有洪涝相随等。进而对山东旱涝活动进行了初步分期。文中还对上述现象的成因作了简单分析。

CHARACTERISTICS OF TIME SEQUENCE OF DROUGHT,FLOOD AND EARTHQUAKE AND THEIR RELATIONSHIPS IN SHANDONG PROVINCE

The characteristics of historical drought disasters,flood catastrophes and earthquake disasters and their relationships in Shandong province have been studied in detail in this paper.It is found that there exists quasi-periodic active characteristics in varied time scales in drought disasters,flood catastrophes and earthquake disasters.For example,most of the strong continental earthquakes and droughts occur in succession,while most of marine earthquakes break out in the flooding period;catastrophic earthquakes usually generated before a drought and succeeded by a flood,furthermore,a preliminary substage of the drought activities in Shandong province is achieved, which has very immportant practical significance for disaster prediction,protection and alleviation.Finally,the genetic interpretation about the phenomenon mentioned here is given.